SAFFA is strongly associated with South Africans, but SAFFAevents have taken "poetic licence" to use it more widely defining a larger area. We use it technically 'incorrectly' on the Website to broadly mean any person from the Southern African Region encompassing South Africa, Namibia and Zimbabwe and ex Rhodesians - don't shoot us, its just catchy and most Southern Africans will get it!
Real world meaning and use:
Although there is no real clear definition to be found on informative web sites, it is urban slang and has become regarded as a way to describe anyone from South Africa! Having googled it, the results are shown below along with links. Its definitely a word that is gaining momentum as more and more people use start to refer to us Southern Africans as Saffa's.
Definitions found on the web:-
funtrivia.com: Saffa comes from the abbreviation SAF which is used to denote South Africa in sporting events. It is not a small jump to conclude that people from SAF must be SAFFA'S
Urban Dictionary: A real South African
Saffa is a term used for South African immigrants taking over a country (usually London) :)
An awesomest person ever
Wiktionary.org: Saffa – A South African person, especially used by Australians who have lived in the UK.
abbreviations.com: A real South African (not an acronym)
Wordnik.com: Have the word listed but no definition (lots of quoted examples though)- maybe if someone wants to go ahead and help define it for them.